IPv4 address

40.91.224.243(NL)AS8075

Last fetched Thu, 21 May 2026 20:09:16 GMT

40.91.224.243 is announced by AS8075 (MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation), located in Amsterdam, NL, NL.

Nutrition Label

Attribution

Registered prefix: 40.80.0.0/12
Announced prefix: 40.80.0.0/12
Announcing ASN: AS8075
Operator: MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation

Anycast detection

No anycast signal detected. Reverse DNS resolves to 50 hostnames; announced prefix is /12; announcing ASN peers with 33 other networks (anycast floor is 10).

Reverse DNS

50 hostnames observed pointing at 40.91.224.243.

Threat posture

Geographic detail

City: Amsterdam, NL
Country: NL

History

Pivot deeper into the graph from 40.91.224.243.

Cypher and MCP

Reproduce the IP profile directly against graph.whisper.security:

MATCH (ip:IPV4 {name: "40.91.224.243"})
OPTIONAL MATCH (ip)-[:BELONGS_TO]->(rp:REGISTERED_PREFIX)
OPTIONAL MATCH (ip)-[:ANNOUNCED_BY]->(ap:ANNOUNCED_PREFIX)
                    -[:ROUTES]->(asn:ASN)-[:HAS_NAME]->(n:ASN_NAME)
OPTIONAL MATCH (ip)-[:LOCATED_IN]->(city:CITY)
OPTIONAL MATCH (ip)-[:HAS_COUNTRY]->(country:COUNTRY)
RETURN ip.name AS ip,
       rp.name AS registered_prefix,
       ap.name AS announced_prefix,
       asn.name AS asn,
       n.name AS network,
       city.name AS city,
       country.name AS country

Or query Whisper from your own LLM workflow via the Whisper MCP server.